Line-casting machine



T. F. DUFF LINE CASTING MACHINE Oct. 2 1923.

Filed July 22 1922 Patented Get 2, 1923.

THOMAS P. DUFF, or SPOKANE, wrisiiiiierori, essieiioaor OhIEflHiRID 'rojivinx V Tomi, or sroxanh,wasiii-iveroiv.

LINE-CASTING- MACHI E;

T 0 all whom iv'ma'y concern:

Be it known that I, THOMAS F. Dori, a citizen of the United 'States, residing at Spokane, in Spokane County and State of "Washington, have invented OQIT'tEl-lllz new and useful Improvements in Line-Casting Machines, of whichthe following is a: specification.

The present invention relates to. improvements in line casting machines of the linotype class, and is designed especially-as a control and safety device to-prevent operation of such machines by rendering inopei at ive the friction clutch mechanism which controls the, machine when the moldlca-rl'yingslide is disconnected, as when parts are removedror pulled out of line for repairs.

In working about the linotypemachine, the clothes of the operator sometimes catch on the clutch lever, or through other accident, the clutch lever is operated to throw thefmachine into. operation. Should such an accident occur while the power is applied to the machine, as the clutch lever is shifted, when all parts of the machine, are not in correct and relative positions, disastrous results. follow. 7 1

The control and safetydevice of the present invention is adapted especially to that class of line casting machines which employ a line-delivery slide which is retracted through its rw f connection, linedelivery cam roller, arm, utilized for; the forward or backward thrust of the line delivery slide, which is accomplished by the use of this line-delivery cam roller arm and which is journaled to its shaft, prior to and subsequent to each casting operation; And the invention also embodies means Ior'coaction with the vertical-lever andlthestop seat thereon for the purpose of terminating one complete revolution of the operating' cams employed in these-machines.

Heretofore, in the operation of machines of this. character, the mold carrying slide is frequently disconnected from its source .of. power, and pulled forward out of operat ve position, for many purposes in connection witliits care and usage, Practical expert ence has demonstrated that safety means? should be provided on the machine, tov prevent accidental or inadvertent sh fting of the lever ofthe clutch controland consequent starting of the machine while such con ditions exist.

Application fil ed July 22, 1922. S'erialNo. 576,80f :3.

The primary .objectiof the'invention ism] provide a simple control device by means of which the first lug of the vertical leverforming part of'the machine, is, rendered inoperative unless in correct;positionqwith relation to the machine "lhus' the control device is designedto engage the vroll of the mold" slide wheel whenever the lever tor handle of the. mold slide isdepressed for purposes above mentioned. This; depression ofthe lever raises the'moldi slidefwheel out of engagement with the mold slide notch and-thisaction brings the safety device of the invention. into effective use, in engagement with the wheel. The invention consists in certain novel: combinationsjand arrange ments of parts as. will be hereinaftermore specif cally pointed outand claimed.

In the accompanying drawings. I have illustrated one complete example, Oh" the physical embodiment of j my invention,-

wherein the partsv are: combined and arranged according to the best mode Ihave thus far devised for the practical application of the principles of my invention.v

The drawings disclose such elements :or members of the machine-as are necessary to ascertain and understand the relation of parts and the application t-orthe mach-l ne of the safety locking-device of my invention.-

the looking or safety device of my invention Figure l is a perspective viewshowing with the vertical starting lever, the device being attached to the upper lug-ofthis lever,

which lug'is slotted toreceive and support the lock ngIdevice.

Figure 2 is a view showing the relation of the locking device of my invention to the line-delivery operatingcam, and the mold slidel'ever wheel'as seen from above.

pump cylinder and connections. r Figure 4 is an I1l1Ig6CllGhfill perspective view of the safety; locking-device detached.

Thefsafety locking device of the invention is an attachment which is readily applicable I tensionQ atone endjfonattachment to themachine as-wili be described; At its opposite end, the plate is, bent to form anangular pawl. 3, disposed, in a plane at right angles, i

to the body "of the plate 1, which is designed 9'5 Figure 3 is a view showing parts of- Figure 2 in elevation, together withthe to co-ac-tu with the mold slide operating mechanism.

A second pawl l is carried by the plate 1, the pawl being fa'shioned with 'a'n attaching bracket 4c and secured to the plate l 'by means of the slot 5 inthe said plate, a clamp plate 6, and clamp screws i. Thefclamp ithe' pawl l may be adjusted longitudinally I plate is located at the back of the plate 1, and the screws 7 which pass through the angle bracket' l and slotted plate 1, are

anchored in thi clamplp-late, in order that i an aperture 11 to receive thc'extension 2 of the plate. The attachment is thus supported on'or carried by the vertical starting lever carried by the cam 18 roller 25.

12, of which the lug 10 forms a part, and the attachment,through its extension may be adjusted relativelyto the lug and lever and secured in adjusted position by] turning tight the set screws 13 and 14, respectively, of the lug which engages the extension in the aperture orsocket 11. The vertical starting lever'l2 issupported on its shaft '15 and the stop lever 16, when depressed engages the lower end of the lever 17 there-. below, to cause the release of the clutch.

The numeral '18 designates one of the cams'of the machine, journaled on the cam shaft 19, which'cam carries the automatic safety or stopping pawl '20 pivoted to the cam at 21. One of the functions ofthe cam is to operate the line-delivery slide lever 22 which has a bearing 23 on the machine frame 23, and a roller arm at on whichthe line-delivery slide roller 25 is journaled. The line-delivery cam roller. rotates on 'the outer surface of the cam 18, the roller 25 belng shownout of engagement with the cam, in Figure 2, and the stopping pawl 20 is moved by the cam The lug 10 operates the mold slide lever "26 by co-action with the mold slide lever wheel 27 in Figure 2, and causes the return to. place of the line-delivery lever 2 i and mold slide lever 26 after their respective movements.

- In Fig-ures2 'and3ithe stopping pawl 20,

' which when in normal position,or unlocked and released, permitsfthe machlne to operate 7 through one revolut on, but in F1gure2, the

pawl 3 of the locking devicevwhich is en-' gaged with the mold slide lever wheel 27 (shown in lowered position) prevents the 3, and 4 are located in stopping pawl ,20 from being moved by pull ing the starting lever 12 in usual manner. The stopping pawl 20 engages the seat of the stop lever 16 tostop the operation-of the the clutch and start the machine, the wheel or roller 25 thereon engages the stopping pawl 20 and pushes said pawl from the stop lever seat 16 upon which it rested. But with the pawl 4 engagingthe pawl "20, the stopping pawl can not be moved until the mold slide lever 26 has been raised by the operator, permitting the pawl 3 to passlto the right in Figure 2, which permitsthe stop ping pawl 20 to move to the right and the machine is then free to operate. V

Having thus fully described my invention, what I claim and desire to secure by Letters Patent is: r i I f 1. In a linotype machine, the combination withv the vertical starting lever and mold slide lever and the wheel on the latter, of an arm carried by the vertical-starting lever, and a wheel on said arm adapted to engage said pawl while the'latter is depressed to eration.

2. In a linotype machine the combination with the vertical starting lever and its upper lug having a socket therein, of an arm adapted to fit said socket and means for holding said arm in adjusted'position, the mold slide lever and its wheel, and a pawl on said arm adapted to engage said wheel while the latter is depressed to hold the vertical starting lever against operation.

3. The combination with a starting lever, a cam for operating the line slide delivery lever and stopping pawl on said cam, the mold slide lever and its wheel, and means carried by said vertical starting lever for engagement with said stopping pawl and wheel, to hold the vertical starting lever against operation for the purpose described.

4- In combination with the vertical starting lever, a cam for operating the, line slide delivery lever and a stopping pawl on said cam, and the mold slide lever and its wheel, of an'adjustable arm and means for securing said arm against said vertical starting lever,

for engagement with said stopping-pawl,

whereby the vertical starting lever is held against operation for the, purpose described.

5. In combination with the vertical start-i I ing lever, a'cam for operating theline slide delivery lever and a stopping pawl on said 7 cam, and themold slide lever'and its wheel, of a perforated lug on saldvertlcal starting lever, an arm having an extension and means for holding said extension in adjusted position in said lug, an angular pawl on said arm adapted to engage said wheel, and an adjustable, angular pawl on said arm adapted to engage said stopping pawl, for the 5 purpose described.

6. In a linotype machine the combination with the vertical starting lever, of a safety device comprising an arm and means for securing said arm in adjusted position on 7 10 said lever, an angular pawl at the free end 7 7. An attachment comprising a slotted plate having an end, angular pawl, a back plate, a bracket plate and screws for secur ing said back plate and bracket plate in adjusted position on the slotted plate, and an angular pawl on said bracket plate.

In testimony whereof I aflix my signature.

rr-roM'As F. DUFF, 

